E.g.f.: sech(sin(x)-arctanh(x))=1-90/6!*x^6-3864/8!*x^8-326214/10!*x^10...

A013396

E.g.f.: sech(sin(x)-arctanh(x))=1-90/6!*x^6-3864/8!*x^8-326214/10!*x^10...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =-90a(4) =-3864a(5) =-326214a(6) =-33507276a(7) =-4970687722a(8) =-949869512144

External references